Table of Contents
Multi-Tech Systems, Inc. MMCModem GPRS Developer’s Guide (S000445D) 3
Table of Contents
Chapter 1 – Product Description and Specifications..............................................................................5
Introduction...........................................................................................................................................5
AT Command Information ...................................................................................................................5
Product Ordering Information.............................................................................................................5
Safety Notices and Warnings..............................................................................................................6
Wireless Safety................................................................................................................................6
Safety Standards..............................................................................................................................6
Instructions to OEMs........................................................................................................................7
Specifications .......................................................................................................................................8
Chapter 2 – Mechanical Drawing.............................................................................................................10
Chapter 3 – Electrical Characteristics ....................................................................................................11
Introduction.........................................................................................................................................11
50-Pin Connector Interface................................................................................................................12
Power Supply Pins Electrical Interface..........................................................................................15
Serial Link Electrical Interface........................................................................................................16
ON / ~OFF Electrical Interface.......................................................................................................17
BOOT Electrical Interface ..............................................................................................................18
Reset Signal (~RST) Electrical Interface.......................................................................................19
Flashing LED Electrical Interface...................................................................................................20
General Purpose Input/Output Electrical Interface ........................................................................20
Analog to Digital Converter Electrical Interface .............................................................................20
Audio Electrical Interface ...............................................................................................................21
SIM Electrical Interface..................................................................................................................25
SPI Bus Electrical Interface ...........................................................................................................27
Keypad Electrical Interface ............................................................................................................27
Chapter 4 – Non-Electrical Interfaces.....................................................................................................28
Flashing LED.......................................................................................................................................28
SIM Interface .......................................................................................................................................28
RF Interface.........................................................................................................................................29
RF Connector.................................................................................................................................29
RF Performances...........................................................................................................................29
DTE/DCE Interface Rates...................................................................................................................29
Chapter 5 – Test Board.............................................................................................................................30
Serial Test/Demo Board Components..............................................................................................30
Serial Test/Demo Board Block Diagram...........................................................................................31
Chapter 6 – Application Considerations.................................................................................................32
Hardware and RF................................................................................................................................32
Firmware Upgrade..............................................................................................................................32
Changing the GPRS Quad Band.......................................................................................................32
Getting Started & Terminal Emulator Setup....................................................................................33
